﻿//
// (C) Copyright 2009 Irantha Suwandarathna (iranthas@hotmail.com)
// All rights reserved.
//

/* Copyright (c) 2001-2008, The HSQL Development Group
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 * modification, are permitted provided that the following conditions are met:
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 * and/or other materials provided with the distribution.
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 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EffiProz.Core.Errors;

namespace EffiProz.Core.DataTypes
{
    public class IntervalMonthData
    {
        public long units;

        public static IntervalMonthData newIntervalYear(long years,
                IntervalType type)
        {
            return new IntervalMonthData(years * 12, type);
        }

        public static IntervalMonthData newIntervalMonth(long months,
                IntervalType type)
        {
            return new IntervalMonthData(months, type);
        }

        public IntervalMonthData(long months, IntervalType type)
        {

            if (months >= type.getIntervalValueLimit())
            {
                throw Error.error(ErrorCode.X_22006);
            }

            if (type.typeCode == Types.SQL_INTERVAL_YEAR)
            {
                months -= (months % 12);
            }

            this.units = months;
        }

        public IntervalMonthData(long months)
        {
            this.units = months;
        }

        public override bool Equals(Object other)
        {

            if (other is IntervalMonthData)
            {
                return units == ((IntervalMonthData)other).units;
            }

            return false;
        }

        public override int GetHashCode()
        {
            return (int)units;
        }

        public int compareTo(IntervalMonthData b)
        {

            long diff = units - b.units;

            if (diff == 0)
            {
                return 0;
            }
            else
            {
                return diff > 0 ? 1
                                : -1;
            }
        }

        public override String ToString()
        {
            throw Error.runtimeError(ErrorCode.U_S0500, "IntervalMonthData");
        }
    }
}
